1. V2012.13

2. 2 Avon High School Tech Club Agenda Old Business –Delete Files New Business –Week 16 Topics: Intro to HTML/CSS –Questions? Tech Club Forums Introduction to Programming 2 (Review) Introduction to Programming 3

3. 3 Avon High School Tech Club HTML/CSS Class QUESTIONS?

4. 4 Avon High School Tech Club Tech Club Forums Ask questions, offer suggestions, share info Check it out: –http://ahstechcrew.org/forums/http://ahstechcrew.org/forums/

5. 5 Avon High School Tech Club Intro to Programming 2 Review API Algorithm Array Boolean Character Code/Source Constant Data Types Debug Floating Point Git GUI Integer Literal Object Oriented Scripting Language SDK String User Interface Variable Virtual Machine

6. 6 Avon High School Tech Club Intro to Programming 3 Additional Key Concepts Intro to Scratch Write First Program

7. 7 Avon High School Tech Club Intro to Programming 3 Intro to Scratch Additional Key Programming Concepts Write First Program(s)

8. 8 Avon High School Tech Club Intro to Scratch Scratch is a programming language that makes it easy to create your own interactive stories, animations, games, music, and art -- and share your creations on the web. –Develop important design and problem-solving skills –Learning how to think creatively –Reason systematically –Work collaboratively http://beta.scratch.mit.edu/

9. 9 Avon High School Tech Club Intro to Scratch

10. 10 Avon High School Tech Club Intro to Scratch Statement –Simply a directive that tells the computer to do something. Think of it as a command or an instruction. Boolean Expression –Either true or false Condition –Something that must be true in order for something to happen

11. 11 Avon High School Tech Club Intro to Scratch Loops –Induce multiple executions of statements Variables –Placeholder for some value, much like x and y are popular variables in algebra Thread –A mini-program within a program that can execute at the same time as other threads

12. 12 Avon High School Tech Club Intro to Scratch Event –Multiple threads can communicate with each other by signaling events and handling events –An event, then, is like a message from one thread to another –Signalers –Handlers

13. 13 Avon High School Tech Club Steps to Writing a Program 1.Gather requirements 2.Choose a programming language 3.Write a program 4.Compile the program* 5.Run or Execute the program 6.Debug the program 7.Repeat process until the program is completed *Depending on the language, you may not need to compile your program.

14. 14 Avon High School Tech Club Let’s Write a Program! Write a program that outputs “Hello World!” Gather requirements –What approach should I take? –What do I need for this program?

15. 15 Avon High School Tech Club Let’s Write a Program! Write a program that asks for the users name, the displays it. Gather requirements –What approach should I take? –What do I need for this program?

16. 16 Avon High School Tech Club Let’s Write a Program! Write a program that adds two numbers Gather requirements –What approach should I take? –What do I need for this program?

17. 17 Avon High School Tech Club Let’s Write a Program! Write a program that prompts the user for his/her name, display the name, then adds two numbers the user inputs, display the results. Gather requirements –What approach should I take? –What do I need for this program?

18. 18 Avon High School Tech Club Let’s Write a Program! Write a program that prompts the user for his/her name, display the name, then adds two numbers the user inputs, display the results. Then ask if the user wants to add more numbers, if yes, add more numbers, if no, quit. Gather requirements –What approach should I take? –What do I need for this program?